Motor mount



April 7, 1953 E. T. PEDRANTI 2,633,817

MOTOR MOUNT Filed Dec. 7, 1950 2 SHEETSSHEET l I n verl tor Eugene 7. Pedran/i April 7, 1953 E. T. PEDRANTI 2,633,317

MOTOR MOUNT Filed Dec. 7, 1950 2 SHEETS-SHEET 2 Inventor Eugene I Pedran/i B, 24mm Patented Apr. 7, 1953 UNITED STATES PATENT OFFICE MOTOR MOUNT Eugene T. Pedranti, Petaluma, Calif. 7 A plication December 7, 1950, Serial No. 199,644

6Claims. (01. 115-18) 3 This invention comprises novel and useful improvements in motor mounts for outboard motors.

An important object of this invention is to provide an outboard motor mount whereby an outboard motor may be supported on a boat intermediate the ends of the boat so as to permit propelling the boat through the water on a substantially even keel and to lower the resistance of the water to the movement of the boat.

Another object of this invention is to mount an outboard motor so that it may be rotated about a complete circle on a vertical axis thereby permitting forward and reverse driving of the boat without reversing the direction of rotation of the propeller.

A further object of this invention is to provide a mount for an outboard motor whereby the motor may be mounted intermediate the ends of a boat, and which mount is so constructed as to prevent water from entering the boat by way of the motor mount. An important feature of this invention resides in the provision of a cylindrical casing adapted to be attached to the bottom of a boat, with means on the upper end of the casing for rotatably mounting an outboard motor thereon, together with a plate rotatably mounted in the casing and disposed about the shaft housing of the motor for rotation therewith.

Another feature of this invention resides in the provision of a motor mount in accordance with the foregoing feature together with an exhaust duct which communicates the casing, below the plate, with the transom of the boat thereby permitting escape of the exhaust gases entrapped in the casing.

Yet another feature of this invention resides in the provision of a plate which will sealingly engage the motor housing, and which is readily detachable therefrom to permit storage of the motor.

These, together with various ancillary objects and features are attained by this device, preferred embodiments of which have been illustrated in the accompanying drawings wherein:

Figure l is a fragmentary longitudinal sectional view of a boat having the motor mount attached thereto with the outboard motor in place;

Figure 2 is a fragmentary horizontal sectional view, taken on the plane 2-2 of Figure l;

Figure 3 is a horizontal sectional view taken on the plane 33 of Figure 1;

Figure 4 is a perspective elevational view of the motor mounting ring;

Figure 5 is a perspective elevational view of the motor mount casing;

Figure 6 is a top plan view of a modified form of motor mount having a motor mounting bar added thereto;

Figure 7 is a fragmentary vertical sectional view of the motor mount shown in Figure 6;

Figure 8 is a perspective elevational view of the motor mounting bar; and.-

Figure 9 is a fragmentary vertical sectional view'of a third form of motor mount.

Briefly, and by way of general introduction to the following detailed description, a glance at the views of the drawings will show that the invention has to do with a boat having a bottom with an upstanding wall structure including a transom, said bottom having an opening therein, a cylindrical casing in alignment with said opening and attached at its lower end to said bottom, an annular turret head embodying an annular sleeve having an annular flange resting rotatably atop the upper end of said cylinder and detachably bolted to the cylinder, an outboard motor having a housing provided with clamp means accessibly clamped on said head. and having a portion depending and extending axially through the lower end of said cylinder, and splash plate, means carried by said depending portion and mounted in the median portion of said cylinder above the plane of the lower end of said cylinder.

Reference isnow made more specifically to the accompanying drawings wherein there is shown a motor mount Ill which is adapted to be attached to a boat l2.

The boat I2, as is conventional includes a bottom l4, sides It, and a transom [8. For the purposes of this invention, the bottom I4 is provided with a circular opening 20, adjacent the stern portion thereof, and a cylindrical casing 22, having a flange 24, on the lower end thereof, is secured, as by fasteners 26, to the bottom of the boat, concentrically with the opening. If desired, an annular wedge-shaped sealing gasket 28 may be interposed between the flange 24 and the bottom I 4 so as to position the casing 22 with its axis extending substantially vertically.

Each of the embodiments of the present invention also includes an exhaust duct 30, which is coupled by the collar 32 to the casing 22, and in communication with the latter, the other end of the duct extending through a bore in the transom and coupled to the latter as by the flanged collar 34. As will be noted, the duct 3!) vents the casing 22 and permits the escape of exhaust gases and water.

In the forms of the invention disclosed in Figures 1-8 the casing 22 has an inwardly directed marginal rim 36 adjacent the upper end thereof, and an annular sleeve 38 having an outwardly extending flange 40 is rotatably disposed within the rim with the flange 40 overlying the top of the casing. One or more radially extending thumb screws 42 are carried by the sleeve 38 and'underlie the rim 35 to detachably retain the sleeve in position.

In the embodiment of the invention shown in Figures 1-5, a portion 44 of the sleeve 38 extends secantially thereof to provide a substantially flat surface,'and a rib 46 depends-from the flange 48,

outboard motor 50.

An antisplash guard is secured to the'lower' end of the sleeve 38 andincludes a pair of semicircular plates 52 having flanges 54 on the diametrically extending edges thereof, the plates being -secured together as by fasteners 56 which extend through the flanges. An oval recess 58 is formed in the contiguous edges of the plates, and an oval split gasket member 60, having a peripheral recess 62 therein is disposed in the openingwith the edges of the plates received in the recess. As will be appreciated, the gasket is adapted to be disposed about the housing 64 for the propeller shaft 66 in sealing engagement therewith to prevent the escape thereby of exhaust gases which are customarily vented at the lower end 68 of the shaft housing. The plates 52 are secured to the lower end of the sleeve 38, as by fasteners 69.

In the embodiment shown in Figure 6-8, the motor i! is mounted on a mounting bar'ifl which is terminally secured by fasteners 12 to the flange 40. It will accordingly be appreciated that it is not necessary to provide the depending rib 46 and flat portion 44, as shown in the embodiment of Figures 1-5. Itis contemplated, however, that the mounting bar be also usable on the embodiment disclosed in Figures 1-5, in the event it is desired to mount a relatively small outboard motor thereon.

The mounting bar has first and second spaced parallel flanges 14 and 15, depending from opposite sides thereof, which flanges are adapted to receive the mounting clamp 48 of the motor 50. Additionally, the bar may be provided with a pair of apertures 18 adjacent the ends thereof, which apertures receive the steering cables 80.

. In-the third embodiment of the invention shown in Figure 9, the casing has a rim 82 disposed on the outside of the upper end thereof, and-a motor mount sleeve 84 is disposed about the rim and has an inwardly directed flange 36 which overlies the top of the casing. A rib 88 depends from the inner edge of the flange B6 and is adapted to support the motor mount clamp 48 of the motor 50. Obviously, a mounting bar such as is shown in Figure 8 may be attached to the flange 86 as an alternative manner of mountrically extending edges thereof, and the ribs are joined by fasteners 96. An opening 98 is formed "in'the contiguous edges of the plates, and a re- 2,633,817 r if l i silient split gasket I00 having a peripheral groove I92, is disposed about the shaft housing 64 of the motor 50, with the edges of the plates adjacent the opening disposed in the groove I02. The marginal edge H34 of the plates is in sliding engagement with the inner face of the casing, whereby the motor 50, sleeve 84 and splash guard are rotatable as a unit about the aXis of the casing. In this regard it is to be noted that the frictional engagement between the gasket I 00 and the shaft housing is sufficient to support the splash guard on the shaft housing. 7 It may be noted, at this time, that the motor 50 in each of the embodiments will rotate with 'thesleeve to which it is attached, substantially about the. axis of the casing, and the splash guard orv shield willv rotate therewith. As it is contemplated' that the exhaust duct 30, in each embodiment communicates with the casing below the splash shield, it will'be appreciated that the exhaust gases, discharged through .the lower end 68 of the shaft housing, and which would tend to collect'in the casing, will be vented to the 1 atmosphere through the transom.

In the form of the invention revealed in'Figure 1 it is to be noted that the anti-splash plate means is on a plane above. the planeof the exhaust pipe 39, and as a matter of fact, it is preferred that the plate means in all forms of the invention be situated in the upper portion of the cylinder. Also, the pipe 39.not only serves to properly handle the exhaust disposal problernbut provides a well needed brace for the simple cylinder construction. The construction disclosed herein makes it possible for an outboard motor to be used inboard in a boat with a high transom. It obviates the usual problem of having to cut down a high transom on boats inthe larger category and by retaining, the high transom waves are prevented from washing upon the motor as they do when a low transom is used resulting in the spark plugs fouling. The invention is so simple that it may be conveniently installed under a cabin out of the weather and, as before stated, provides for the desired 360 swivelling of the turret with the attending advantages hereinbefore mentioned.

With the cylinder having a simple attaching flange 24 and with the tapered shim which may be conveniently accommodating as at 26 and 28 the desired perpendicularity of the cylinder is attainable.

Having described the invention, what is claimed as new is:

1. In combination, a boat having a bottom with an upstanding wall structure, including a transom, said bottom having an opening therein, a vertical cylinder in alignment with said opening and attachedat its lower endto said bottom, an annular turret head embodying an annular sleeve having an annular flange resting rotatably atop the upper end of said cylinder and detachably bolted to the cylinder, an outboard motor having a housing provided with clamp means accessibly clamped on said head and having a portion depending and extending axially through the lower end of said cylinder, and splash plate means carried by said depending portion and mounted in the median portion of said cylinder above the plane of the lowerend of said cylinder.

2. The structure defined in claim 1, wherein said plate means has a centered gaskettightly embracing said' depending portion, saidplate means being secured to said sleeve and rotatable with the latter.

3. The structure defined in claim 2, wherein said cylinder is provided with an exhaust port below the level of said plate means, said transom havinga cooperating exhaust port, and a rigid exhaust pipe secured at one end to said cylinder in line with the port in the latter and secured at its opposite end to said transom in line with the port of the latter, whereby to brace said cylinder by way of said transom.

4. For use in a boat having abottom with an upstanding wall structureincluding a transom, said bottom having an opening therein; a mount for supporting an outboard motor within the limits of the wall of the boat comprising a vertical cylinder adapted for attachment at its lower endto said bottom to permit the casing to be lined up with said opening, said cylinder being provided on its upper end with a lateral annular rim, an annular turret head embodying an annular sleeve provided with an integral'annular flange resting rotatably atop said'rim and adapted to remain in a constant plane with the plane of said rim, readily applicable and removable bolt means carried by said sleeve and engaging beneath the available shoulder provided by said rim, and plate means constituting an antisplash guard, said plate means being on the interior of said cylinder and attached to the bottom of said sleeve, said plate means being centrally apertured to permit passage therethrough of a depending part of an outboard motor construction, and gasket means carried by the plate means and in alignment with the central aperture.

5. The structure specified in claim 4'wherein said head is provided at apredetermined place and surfaces 6. The structure defined in claim 4 and a horizontal readily attachable and detachable clamp accommodating bar, said bar spanning the upper end of m tions superimposed and fastened to said turret head, the intermediate j longitudinal edge portions of said bar having allel fiat faced flanges, whereby vsaid bar in conjunction with the flanges 5 accommodation and suspension clamp.

Number UNITED STATES Name Date Wilson Sept. 2, 1930 Harvey -1 Dec. 30, 1930 Harvey Sept. 29, 1931 Conover May 31, 1932 Witke Jan. 31, 1933 Smith June 23, 1936 Solie Sept. 3, 1940 35 Number to accommodate an attaching clamp such as is commonly used on and in connection with an outboard motor.

REFERENCES CITED The following references are of file of this patent:

the cylinder and having end pordepending spaced parserves as an eiie'ctive for the stated EUGENE T. PEDRANTI.

record in the PATENTS Brown Apr. 5, 1949 Sharp Sept. 19, 1950 FOREIGN PATENTS Country Date Great Britain Sept. 15, 1927 Germany Aug. 23,1915 

